A
HE, DE & RE MANUAL
IOM-26
32 of 33
Oct 12 R4
BURNERS
It is recommended that the burner be inspected once each year.
Remove any scale that may have accumulated on the burner plates.
Ensure that the holes on the burner plates and gas orifices are
completely clear of foreign material. The first 2 orifices on the tee
casting as shown are #45, all others casting orifices are #42.
FILTERS
Filter-changing intervals can be based on the pressure drop across the filter or by calendar scheduling or
visual inspection. Scheduled intervals should be between one and six months, depending on the pollutant
loading from indoor and outdoor air. More-frequent changes may be required during the economizer
season.
Units that operate with high levels of outside air should have filters removed (or moved to winter
filter location if available) during the winter months in areas that have heavy frost or snow.
Plugged or excessively dirty filters can cause damage to the equipment. See submittal record for filter
quantities, sizes and types. Use same size and type for replacement.
A.
High Velocity Permanent:
It is important that the filters be checked and cleaned regularly during the period immediately
following installation, in order to determine the best service interval. To clean, rinse with water.
Shake off excess water and re-install. These filters do not require an oil adhesive.
B.
Pleated Throwaway and/or Replaceable Media (Cartridge, Bag):
Replacement filters can be obtained from any Engineered Air representative.
In some applications the used filters/media may contain chemical or biological hazards. All local, regional
and national regulations for safety and disposal should always be followed.
VFD ENCLOSURE
Filters may be located on the air inlet of VFD enclosures. Filter-changing intervals can be based on
calendar scheduling or visual inspection. Scheduled intervals should be between one and six months,
depending on the pollutant loading in the enclosure area.
